auto save

diy.py

+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+# file1=open(r"C:\Users\Administrator\Desktop\book.txt","w",encoding="utf-8")
+# file1.write("小兰：12本")
+# file1.write("小丽：11本")
+# file1.write("李文：9本")
+# file1.write("张伟：16本")
+# file1.close()
+with open(r"C:\Users\Administrator\Desktop\book.txt","r",encoding="utf-8")as file1:
+    for data in file1:
+        if "小兰：12本" in data:
+            print("数据在文件中")
+
+
+    
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